Trap nest



June 26; 1928. 1,674,700

I. PUTNAM TRAP NEST Filed May 20, 1924 IN V EN TOR.

5 4 2.3'ATToRNEY Patented June 26, 1928.

UNITED STATES TE OFFI E rsnnnn Pur tan, or nmvrmmunnw 103K, AssmNo-n ror. rnrnmva Inc, or ELMIRA,

NEW YORK, AconronATIo'N on NEW YORK.

' TRAP Application fil ed my 26,

My present invention relates to poultry raising and more particularly to trap nests and it has for its object to provide a simple, cheap and convenient device of this character that can be easily and quickl set and which will operate. with certainty to prevent both ingress and egress when it J is once sprung. To these and other ends the 'invention resides in certain improvements and combinations of parts. all as will be herein after more fully: described, the novel: features being pointed out in the claims at the end of the specification.

In the drawings; u v 1 I Figure 1 is a front view ofa trap nest constructed in accordance with andillustrating one embodiment of my invention;

Figure 2 is a fragmentary central vertical c section therethrough with the door open or inset position; v i f 1 I Figure 3 is'a similar View with the door in closedv or sprung position;

Figure 4 is an enlarged cleaner the door with its locking. hinge.

Similar reference numerals throughout the several vlews 1nd1cate the-same parts.

1 It will be obvious from the later descrip tion that the nest maybe-made of wood with metal fittings but I prefer to make the operating parts of sheet metal which makes the nest more compact and easier toship. To this end I apply to. the front of a wooden nest box I a metal plate 2 having an opening 3 therein. The lower portion of theftro'nt wall of the box maybe of woodas indicated at 4 to which portion. front plate is nailed. sliding plate 5 slotted at, 6 is mountedon thumb screws 7 to regulate the size of the opening 3 or rather to vary the height of its lower edge for a purpose that will later appear.

Projecting into the opening 3 from opposite sides thereof near the top are a pair of ears 8 struck from thesheet metal and forming short fiat trunnions. The door 9 is supported on these and is shorter than the opening though fitting it fairly closely at the sides. It is preferably made of a sheet metal plate having a hook shaped tongue 10 struck out from its center to provide a hand hold by means of which it may be manipulated as hereinafter described. At each side of the door near its top is anoutwardly or forwardly turned preferably triangular the lower edge of the A narrow, vertically be adjusted Vertically and,

1924. Serial No. 714,691.

slot 12 communicates with "a triangular op ening 14; in the ear 11 in the upper angle of the point at which theopening merges into the slot. The openingis of such .dime n sions that thexdoor nay be turned to an angular position when thetrunnion 8 occu pies the opening. To open the door and set the ,trap nest the door. is raised vertically so that the t'runnions 8 pass from the slot 12 into the; opening 14:. door is then tilted inwardly and theshoulder 15 engaged over the top edge of the trunnion as shown in Figure 2, said trunnion beingthen dis posed against the adjacent side 16 of the opening, 14 and its lower edge occupying the forward angle of said openingso that, the weight of the door will not; dislodge the shoulder. ,V i i When the bird enters the nest, the di'm'en sions arei. such. that. her back collides with the lower edge of the open door raising rotates by gravity ln a counter clockwise direction to'its closed position. The 'tr'uni ni'ons 8,, during this process moveinto. the

lower ends of the slots 12 and finally resume their lock-ed positions at the upper ends of the slots 12 as shown in Figure 3 sothat the nest is secure against both ingress and egress. An advantage of having the adjustable sill piece 5 at the bottom of the opening 3 is that the bird'usually steps on the sill in entering the nest and in order to assure the proper contact with the door to trip it the whichopening is a shoulder 15 adjacentto said sill piece is regulated. according to the 1 size of the bird frequenting that particular nest.

I claim as my invention:

1. In a trap nest, the combination with aand supports for the door rigid upon thecasing and adapted for automatically locking the door against opening movement in both directions when it is once moved to closed position.

2. In a trap nest, the combination with a casing having an entrance opening, of a door therefor, supports for the door upon which the latter is adapted to swing and upon which it is also adapted to slide vertically when in closed position, and means for preventing the door from swinging in either direction when it is in its lowermost sliding position.

3. In a trap nest, the combination with a casing having an entrance opening, pro vided with inwardly projecting trunnions, of a swinging door for the opening having a shoulder adapted to support it in an open position by engaging with the trunnions, and furtherprovided with means for locking the door against swinging movement when the shoulder is disengaged and the door swung to a closed position.

4. In a trap nest, the combination with a casing having an entrance opening provided with an inwardly projecting trunnions, of a swinging door for the opening having a shoulder adapted to support it in an open position by engaging with the trunnions, and further provided with a slot adjacent the shoulder adapted to receive the trunnions and lock the door against further swinging movement when the shoulder is disengaged and the door has once swung to a closed position.

5. In a trap nest, the combination with a casing having an entrance opening provided with inwardly projecting trunnions,of a swinging door for the opening having shoulder means adapted to support it in an inwardly inclined open position by engaging with the trunnions said door when opened being adapted to be engaged by the back of a bird entering the nest to dislodge said shoulder means, and a slotadjacent to the shoulder means adapted to receive the trunnions and lock the door against further swinging movement once the shoulder means is dislodged and the door drops to closed position.

6. In a trap nest, the combination with a casing having an entrance opening provided with inwardly projecting flat trunnions, of a swinging door for the opening having lateral ears provided with openings in which the door pivots on the trunnions between open and closed position and with communicating slots and with shoulders adjacent to the slots, the latter being adapted to engage the trunnions and support the door in an inwardly inclined open position, and being furtherad-apted to be dislodged by con tact by a bird with the door, the trunnions being adapted to be received within the slot through a vertical movement of the door after it hasfreached the closed position to thereafter lock the door against swinging movement in either direction.

7. In a trap nest, the combination'with a casing having an entrance opening and a door adapted to swing in the opening be tween open and closed positions, of pivotal supporting devices for the door provided with means tripped by a lifting action on the door for supporting it in an inwardly inclined open position, and means for adjusting the height of the bottom edge of the opening.

8.. In a trap nest the combination with a casing having an entrance opening and a door adapted to swing in the opening between open and closed position and to also move vertically in its own plane when in closed position, of pivotal supporting de vices for the door provided with means for supporting it in open position and for locking it against swinging movement through the said vertical movement of the door when the latter is in closed position.

9. In a trap nest, the combination of a casing having an entrance opening, supports upon the casing, and a door for the opening carried by and adapted to swing on the supports and being adjustable thereon to open position and arranged to be locked thereby when in closed position.

ISRAEL PUTNAM. 

